title: [The drop sign in retrograde pyelography with oil contrast media].
mesh_terms: D003287:Contrast Media; D007682:Kidney Pelvis; D010808:Physical Examination; D014513:Ureter; D014567:Urography
chemical_list: D003287:Contrast Media
keywords: PYELOGRAPHY
vernacular_title: O sinal das gotas na pielografia ascendente com contrastes oleosos.